refresh.ps1

function Update-SessionEnvironment {

<#

.SYNOPSIS

Updates the environment variables of the current powershell session with

any environment variable changes that may have occured during a chocolatey

package install.



.DESCRIPTION

When chocolatey installs a package, the package author may add or change

certain environment variables that will affect how the application runs

or how it is accessed. Often, these changes are not visible to the current

powershell session. This means the user needs to open a new powershell

session before these settings take effect which can render the installed

application unfunctional until that time.



Use the Update-SessionEnvironment command to refresh the current

powershell session with all environment settings possibly performed by

chocolatey package installs.



#>

  Write-Debug "Running 'Update-SessionEnvironment' - Updating the environment variables for the session."



  #ordering is important here, $user comes after so we can override $machine

  'Machine', 'User' |

    % {

      $scope = $_

      Get-EnvironmentVariableNames -Scope $scope |

        % {

          Set-Item "Env:$($_)" -Value (Get-EnvironmentVariable -Scope $scope -Name $_)

        }

    }



  #Path gets special treatment b/c it munges the two together

  $paths = 'Machine', 'User' |

    % {

      (Get-EnvironmentVariable -Name 'PATH' -Scope $_) -split ';'

    } |

    Select -Unique

  $Env:PATH = $paths -join ';'

}